Sometimes when we think about efficiency and green building, we get caught up in complex systems and expensive technologies. Because of this, we forget we can address such issues using basic and simple techniques. One of our biggest concerns nowadays is the large amount of energy consumption in buildings. We had previously talked in class about the use of air conditioning and its inefficiency. However, since the discussion session ended, we have pushed this idea to the back of our minds.

For the purpose of simplifying this blog and any complex method that may emerge as an attempt to reduce energy consumption, I would like to bring the issue up again. Reducing energy consumption in buildings is not about changing human comfort zones and turning the air conditioning system off, it is more about changing our design method. The usual thick rectangular configuration of buildings must be left behind in order to adapt a natural system of ventilation.

Cross ventilation is a pretty simple concept that should be employed as part of building design. Even though its application probably means it will take more time to properly design the structure, the results it yields if well made are worth it. One of Germany’s most “innovative green buildings” is the GSW Headquarters in Berlin; the structure was completed in 1999 – one can see how some of the techniques, as is the case with cross ventilation, used more than a decade ago are still more functional than other modern more complex systems (after 10 years it is still working). In this building one can appreciate (see image) the role the placement of an envelope on the façade has on the building’s overall efficiency; the structure uses a “passive ventilation system”. The windows are also operable, a factor than increases human comfort since it makes people feel like they are in control (according to “Ecology Design Synthesis”).

What is interesting about this is that it is a renovation. One can only begin to wonder why aren’t buildings that are highly occupied also renovating? After all, in the long run these renovations will account for savings.

I guess it all comes down (apart form short term economic obstacles) to being stubborn. It is hard for contemporary human beings to change routines or what we are used to. Even though the weather outside is great, you get little or no people opening their windows. I know I open mine just because I like colder temperatures than what my roommates do, but not because I’m trying to save energy, so I can’t really judge.